h2{
	font-size:140%;
	margin-top:2em;
}

.example{
	position:relative;
	border:1px solid #ccc;
	width:400px;
	height:300px;
	margin:1em 0 5em 0;
}

.example .obj{
	width:30px;
	height:30px;
	background:red;
	overflow:hidden;
	position:absolute;
}

.example input{
	position:absolute;
	top:100%;
	margin-top:10px;
}

#example4 .obj{
	left:200px;
	top:200px;
}

#example5 canvas{
	display:block;
}
